| Ulcer 1. (n.) A solution of continuity in any of the soft parts of the body, discharging purulent matter, found on a surface, especially one of the natural surfaces of the body, and originating generally in a constitutional disorder; a sore discharging pus. It is distinguished from an abscess, which has its beginning, at least, in the depth of the tissues. 2. (n.) Fig.: Anything that festers and corrupts like an open sore; a vice in character. 3. (v. t.) To ulcerate. Thesaurus Entries abdominal hernia, abscess, aposteme, bane, bed sore, blain, bleb, blight, blister, boil, bubo, bulla, bunion, cancer, canker, canker sore, carbuncle, chancre, chancroid, chilblain, cold sore, colitis, curse, disease, diverticulitis, diverticulosis, duodenal ulcer, duodenitis, eruption, eschar, esophagal ulcer, esophagitis, felon, fester, festering, fever blister, fistula, furuncle, furunculus, gastritis, gathering, gumboil, hemorrhoids, hiatal hernia, inflammation, kibe, lesion, megacolon, papula, papule, paronychia, parulis, peptic ulcer, peritonitis, pestilence, petechia, piles, pimple, plague, pock, poison, polyp, pustule, rising, scab, scourge, soft chancre, sore, stigma, stomach ulcer, sty, suppuration, swelling, tubercle, ulceration, wale, welt, wheal, whelk, whitlow, wound |